Support for concrete reenforcements



Sept. 10, 1929. w, MATHEWS 1,727,478

SUPPbRT FOR CONCRETE REENFORCEMENTS Filed Aug. 5, 1927 Inventor WE. Mathews By Alorney Patented Sept. 10, 1929 UNITED STATES:

WILLIAM E. MATHEWS, on. BIRMINGHAM, ALABAM Y snrron'r non concan'rn nnnnroncnMnnrs.

Application filed August 5,1927. Serial N'o. 210,834.

My invention relates to a support for concrete reenforcing steel and is more particularly directed towards the designing of a new and improved type of support tor the temperature or carrying bars on which the raised ends of the arch bars rest.

The object of my invention is to provide' a support which is very simple and 1neXpen sive in its structure, which can be shipped knocked down; which is readily adpistable to support the carrying bars and arch bars.

at any desired height within a reasonable range from the base of the slab or support for the concrete to be reentorced; and which 5 possesses the distinct advantage of positively gripping the carrying bars so as to support the reenforcernentwithout requiring any tacking to the floor, tying, or showlng through.

More particularly, my invention contemplates the provision of a support formed of a pair of straight notched rods connected loosely by a yoke which is preferably formed as curved plate with spaced holes in its ends to receive the rods. It is contemplated that the carrying bars will be received be-] tween the support rods while resting upon the yoke, thereby permitting said bars, as they spread apart at their base into opercarr ving bars and thus interlock the support firmly therewith. By providing a plurality of notches, the rods will permit a reasonable adjustment in height of the supporting yokes for the carrying bars and thus adapt the same support to serve under a reasonably wide range of operating conditions.

My invention further comprises the novel details of construction and arrangement of parts, which, in its preferred embodiment is hereinafter more particularly described and claimed, and which is illustrated in the accompanying drawings which form a part of this specification.

In the drawings Fig. 1 is a view showing the support in position under a temperature bar upon which the arched reenforcing steel rests.

Fig. 2 is an enlarged end view of Fig. 1.

Fig. 3 is a detail view of the yoke.

clamp the carryingbar'with a grip which in ating position, to clamp and bind upon the Similar reference numerals'reierto similar part-s'throughout the drawings); n v a I The embodiment of my invention is shown adapted to, form a high support for :a temperature or'carrying bar 4 which is disposed transversely to .and serves to carry the high.

ends 5 of the arch bars 6.:forming the reenforcement. steel for a concrete slab of the c mushroom heads of columns. Each support comprises a pair of inclined legs 7. preferably -formedof steel rodshaving suflicient diame ter tor the duty contemplated andeach provided near one end with aseries of equidistantly spaced transverse notches 8. These rods 7 have their upper ends inserted through; the holes 9 in a yoke plate 10 preferably formed with a slight middle bend adaptedto receive center and support a carrying bar 4 which, by engagement with the upper ends of the rods, serves to hold them interlocked" with the outer ends of the yoke by engagement in theirnotches 8. I The rods7,as they are spread apart to set up the support will fulcrum upon the outer ends of the yoke and creases with the head on the suppoit. The

bend in the yoke lO enables it to readily set itself and take its load without distortionor subsequent settlement and the whole support is thus very positively and rigidlYiht l k d with the carrying bar itsupportsf It is obvious thatthe yokecan be adjusted to suflicient heightsby interlocking it with the desired notches 8 on the support rods 7 These supports are usually spaced on five to sizr foot centers along each carrying bar 4;, and they are readily collapsible, easily set up on the job, and being adjustable to difl'erent heights will require but a minimum of stocking of material to provide the needed high supports. A

Though I have described with great particularity the details of the embodiment of the invention herein shown, it is not to be construed that I am limited thereto, as

I claim as new and desire to secure by LettersPatent, is

1. A high support for reenforcing steel, comprising a pair of rods, a cross connec- 5 tion to which the rods are pivoted, said cross connection being adjustable on the rods and adapted to support between them a concrete r reenforcing member. I

2. A high support for concrete reenforcement, comprising a pair of rods. having a plurality of notches near one end, a yoke plateperforated to permit the rods to be inserted therethrough and engaged in opposed notches in the rods, and'a reenfo'r'cement bar adapted to rest on said yoke-between the upper ends of the rods;

3. A high'support for concrete reenforcement, comprising a pair of notched rods, and a yoke having; spaced holes adapted to receive'the rods, the yoke being adapted to engage in the rod notches and to support a reenforcing bar and its holes being spaced to cause the rods as they tend to spread apart under their load to clamp the reenforcing bar 25. above the yoke.

4. A high support for concrete reenforce-' ment, comprising a pair of notched rods, and a bar supporting yoke having holes adapted to snugly receive the rods, the holes" 5 being spaced a lesser distance than the Width of the reenfo'rcing bar .to be supported by the yoke, whereby the upper ends of the rods when disposed in inclined operating position are adapted to be held by said re- 7 enforcing bar in interlocked relation With notches on said rods. 1 1 a 5. A high support for concrete reenforcement, comprising a pair ofrods, and means adjustable vertically on the rods and adapt- 40 I ed to connect them for relative angular play in a vertical plane, said means being adapted to supporta reenforcing bar in posi tion to be clamped between the rods and j by its load and size to interlock the connect' in means in adjusted position on the rods. in testimony whereof I afiix my signature.

WILLIAM E. MATHEWS. 

